ProNAi Therapeutics to Present at the 15th Annual BIO Investor Forum in San Francisco

VANCOUVER, Oct. 13, 2016 /PRNewswire/ - ProNAi Therapeutics, Inc. (NASDAQ: DNAI), a clinical-stage drug development company advancing targeted therapeutics for the treatment of patients with cancer, today announced that Dr. Nick Glover, President and Chief Executive Officer, will present an overview of the company entitled "Beyond PARP – Next Generation DDR Therapeutics" at the 15th Annual BIO Investor Forum in San Francisco.

The presentation is scheduled for 9:00 am (PT) on Wednesday, October 19th, 2016. A live audio webcast and archive of the presentation will be accessible through the ProNAi website at www.pronai.com.

About ProNAi Therapeutics ProNAi Therapeutics (ProNAi) is a clinical-stage drug development company advancing targeted therapeutics for the treatment of patients with cancer. Our lead drug candidate, PNT737, is a highly selective, orally bioavailable small molecule inhibitor of Checkpoint kinase 1 (Chk1), a central regulator of the DNA Damage Response (DDR) network. In cancer cells, replication stress induced by oncogenes (e.g. MYC and RAS) combined with loss of function in tumor suppressors (e.g. p53 and ATM) results in persistent DNA damage and genomic instability. Targeted inhibition of the remaining components of the DDR network by PNT737 may be synthetically lethal to cancer cells and have utility as a monotherapy in a range of tumor indications. Chk1 is also believed to facilitate tumor cell resistance to chemotherapy or radiation-induced DNA damage and the combination of PNT737 with these standards-of-care may provide synergistic anti-tumor activity. PNT737 is currently being investigated in two Phase 1 clinical trials in patients with advanced cancer.

ProNAi is also advancing PNT141, a potent, selective and orally bioavailable small molecule inhibitor of the Cdc7 kinase undergoing preclinical development. Cdc7 is a key regulator of both DNA replication and the DDR network, making it a compelling emerging target for the potential treatment of a broad range of tumor types. As both Chk1 and Cdc7 have potentially complementary cell cycle checkpoint and DDR functions, inhibiting both of these targets simultaneously may be advantageous. This potential biological synergy presents opportunities for novel proprietary combination strategies involving PNT737 and PNT141. ProNAi retains the global commercialization rights to both PNT737 and PNT141. For more information, please visit www.pronai.com.

Cautionary Note on Forward-Looking Statements This press release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements regarding ProNAi's anticipated clinical development and the potential benefits of ProNAi's product candidates. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. These statements are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and assumptions that could cause actual results to differ materially from those described in the forward-looking statements. Such forward-looking statements are subject to risks and uncertainties, including, among others, the risk that ProNAi may be unable to successfully develop and commercialize product candidates, PNT737 and PNT141 are at early stages of development and may not demonstrate safety and efficacy or otherwise produce positive results, ProNAi may experience delays in the preclinical and anticipated clinical development of PNT737 or PNT141, ProNAi may be unable to acquire additional assets to build a pipeline of additional product candidates, ProNAi's third-party manufacturers may cause its supply of materials to become limited or interrupted or fail to be of satisfactory quantity or quality, ProNAi's cash resources may be insufficient to fund its current operating plans and it may be unable to raise additional capital when needed, ProNAi may be unable to obtain and enforce intellectual property protection for its technologies and product candidates and the other factors described under the heading "Risk Factors" set forth in ProNAi's filings with the Securities and Exchange Commission from time to time. ProNAi undertakes no obligation to update the forward-looking statements contained herein or to reflect events or circumstances occurring after the date hereof, other than as may be required by applicable law.